You can see pictures of the watch here:

http://manofestoyomi.blogspot.com/2010/03/stopwatches.html

I saw an identical looking watch on eBay being offered by a seller in China, who had begun the bidding at 150$US. I copied the specs for my watch from that seller, although mine looks to be in much better condition. I inherited this watch from my father,, who got it from his father. I don’t know how to open the case, but if anyone can tell me how to open the case, I would appreciate that, so that I can open it and photograph its innards. The watch still has the remants of the original Heuer sticker on its back. This can be scraped off to reveal the stainless steel – I have left it on for now.

Date of manufacture: Circa 1950's age,SWISS MADE
Working:Exact Running
Movement:Seven 7 Jewels Mechanical,Manual Wind,signed.
Precision: 1/10 second
Case:Stainless steel
Dial & hands: perfect 100% original
Button: Nice 100% original
Crystal:Nice 100% original Acrylic
Size: diameter ---- 50mm

thickness ---- 14mm

Could anyone give me an indication of the market value of such a watch? And perhaps confirm if the specs above are correct for it.
Thanks
Immanuel